# US 2025/0097818 A1 · Relay communication method and apparatus, and terminal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0097818 A1 - Document ID: US20250097818A1 - Status: Published application - Kind: A1 - Application number: 18/963,807 - Filed: 2024-11-29 - Published: 2025-03-20 - Earliest claimed: 2022-06-09 - Assignees: Vivo Mobile Communication Co., Ltd. - Applicants: Vivo Mobile Communication Co., Ltd. - Inventors: Jiamin LIU - Web page: https://patentgrep.com/patent/US20250097818A1 ## CPC - H04W 40/22: using selective relaying for reaching a BTS [Base Transceiver Station] or an access point - H04W 40/12: based on transmission quality or channel quality - H04W 40/24: Connectivity information management, e.g. connectivity discovery or connectivity update - H04W 76/14: Direct-mode setup - H04W 88/04: adapted for relaying to or from another terminal or user - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A relay communication method and apparatus, and a terminal are provided. The relay communication method includes following steps. A first device obtains first information, where the first information includes configuration information for establishing a bearer of first communication. The first device establishes, with a second device, the bearer of the first communication based on the first information, and communicates therewith. The first device is one of a source terminal and a destination terminal, and the second device is the other of the source terminal and the destination terminal. The first communication is sidelink relay communication. The first information includes at least one of: first configuration information that is end-to-end configuration information in the configuration information of the bearer; and second configuration information that is hop-by-hop configuration information corresponding to a first target hop between the first device and a third device in the configuration information of the bearer. ## Claims ### Claim 1 A relay communication method, comprising: obtaining, by a first device, first information, wherein the first information comprises configuration information for establishing a bearer of first communication; and establishing, by the first device and with a second device, the bearer of the first communication based on the first information, and communicating with the second device, wherein the first device is one of a source terminal and a destination terminal of the first communication, the second device is the other of the source terminal and the destination terminal of the first communication, the first communication is sidelink relay communication, and the first information comprises at least one of the following: first configuration information, wherein the first configuration information is end-to-end configuration information in the configuration information of the bearer; and second configuration information, wherein the second configuration information is hop-by-hop configuration information corresponding to a first target hop between the first device and a third device in the configuration information of the bearer, and the third device is a relay device connected to the first device in the first communication. ### Claim 2 (depends on 1) The method according to claim 1, wherein the obtaining, by a first device, first information comprises: receiving, by the first device, a first message from a network side device, and obtaining the first information based on the first message, wherein the first message comprises at least one of the following: the first configuration information and/or the second configuration information; a configuration table, wherein the configuration table is used to search for the first configuration information and/or the second configuration information; and a mapping relationship between the first configuration information and the second configuration information. ### Claim 3 (depends on 2) The method according to claim 2, wherein the receiving, by the first device, a first message from a network side device, and obtaining the first information based on the first message comprises: receiving, by the first device, first signaling from the network side device in a case that the first device is in a radio resource control connected state, wherein the first signaling comprises the first configuration information and/or the second configuration information. ### Claim 4 (depends on 3) The method according to claim 3, wherein the first signaling further comprises the mapping relationship between the first configuration information and the second configuration information. ### Claim 5 (depends on 3) The method according to claim 3, wherein before the receiving first signaling from the network side device, the method further comprises: sending, by the first device, second information of the first communication to the network side device, wherein the second information comprises service-related information and/or link-related information of the first communication. ### Claim 6 (depends on 2) The method according to claim 2, wherein the receiving, by the first device, a first message from a network side device, and obtaining the first information based on the first message comprises: receiving, by the first device, second signaling from the network side device in a case that the first device is in a radio resource control idle state or inactive state, wherein the second signaling comprises the configuration table, and the configuration table comprises a mapping relationship between the first information and second information; and searching for, by the first device, the first information from the configuration table based on the second information of the first communication, wherein the second information comprises service-related information and/or link-related information of the first communication. ### Claim 7 (depends on 6) The method according to claim 6, wherein the second signaling further comprises the mapping relationship between the first configuration information and the second configuration information. ### Claim 8 (depends on 2) The method according to claim 2, wherein the receiving, by the first device, a first message from a network side device, and obtaining the first information based on the first message comprises: obtaining, by the first device, pre-configuration information from third signaling in a case that the first device is out of network coverage, wherein the pre-configuration information comprises the configuration table, and the configuration table comprises a mapping relationship between the first information and second information; and searching for, by the first device, the first information from the configuration table based on the second information of the first communication, wherein the second information comprises service-related information and/or link-related information of the first communication. ### Claim 9 (depends on 8) The method according to claim 8, wherein the third signaling further comprises the mapping relationship between the first configuration information and the second configuration information. ### Claim 10 (depends on 5) The method according to claim 5, wherein the service-related information of the first communication comprises at least one of the following: end-to-end QoS parameter information; and hop-by-hop QoS parameter information. ### Claim 11 (depends on 10) The method according to claim 10, wherein the hop-by-hop QoS parameter information comprises at least one of the following: QoS parameter information of a current hop; QoS parameter information that has been allocated or occupied; remaining QoS parameter information except the QoS parameter information that has been allocated or occupied; and QoS segmentation information. ### Claim 12 A relay communication method, comprising: obtaining, by a fourth device, third information, wherein the third information comprises configuration information related to the fourth device in configuration information for establishing a bearer of first communication; and establishing, by the fourth device, a hop-by-hop sidelink bearer of a second target hop and/or a hop-by-hop sidelink bearer of a third target hop based on the third information, wherein the fourth device is one of relay devices in the first communication, the second target hop is a hop between the fourth device and an upstream device, the third target hop is a hop between the fourth device and a downstream device, the upstream device is a relay device or a first device of the first communication, the downstream device is a relay device or a second device of the first communication, the first device is one of a source terminal and a destination terminal of the first communication, the second device is the other of the source terminal and the destination terminal of the first communication, the first communication is sidelink relay communication, and the third information comprises at least one of the following: third configuration information, wherein the third configuration information is configuration information of the second target hop in the configuration information of the bearer; and fourth configuration information, wherein the fourth configuration information is configuration information of the third target hop in the configuration information of the bearer. ### Claim 13 (depends on 12) The method according to claim 12, wherein the obtaining, by a fourth device, third information comprises: receiving, by the fourth device, a fourth message from the upstream device, wherein the fourth message comprises the third configuration information; and obtaining, by the fourth device, the fourth configuration information based on the third configuration information. ### Claim 14 (depends on 13) The method according to claim 13, wherein the obtaining the fourth configuration information based on the third configuration information comprises: obtaining the fourth configuration information based on the third configuration information and/or related information of the third target hop in second information of the first communication, wherein the second information comprises service-related information and/or link-related information of the first communication. ### Claim 15 (depends on 12) The method according to claim 12, wherein the obtaining, by a fourth device, third information comprises: receiving, by the fourth device, fourth signaling from a network side device in a case that the fourth device is in a radio resource control connected state, wherein the fourth signaling comprises the third information. ### Claim 16 (depends on 13) The method according to claim 13, wherein before the receiving fourth signaling from a network side device, the method further comprises: sending, by the fourth device, related information of the third target hop in second information of the first communication to the network side device, wherein the second information comprises service-related information and/or link-related information of the first communication. ### Claim 17 A first device, comprising a processor and a memory, wherein the memory stores a program or instructions executable on the processor, and the program or instructions, when executed by the processor, implement steps of: obtaining first information, wherein the first information comprises configuration information for establishing a bearer of first communication; and establishing, with a second device, the bearer of the first communication based on the first information, and communicating with the second device, wherein the first device is one of a source terminal and a destination terminal of the first communication, the second device is the other of the source terminal and the destination terminal of the first communication, the first communication is sidelink relay communication, and the first information comprises at least one of the following: first configuration information, wherein the first configuration information is end-to-end configuration information in the configuration information of the bearer; and second configuration information, wherein the second configuration information is hop-by-hop configuration information corresponding to a first target hop between the first device and a third device in the configuration information of the bearer, and the third device is a relay device connected to the first device in the first communication. ### Claim 18 (depends on 17) The first device according to claim 17, wherein the obtaining first information comprises: receiving a first message from a network side device, and obtaining the first information based on the first message, wherein the first message comprises at least one of the following: the first configuration information and/or the second configuration information; a configuration table, wherein the configuration table is used to search for the first configuration information and/or the second configuration information; and a mapping relationship between the first configuration information and the second configuration information. ### Claim 19 (depends on 18) The first device according to claim 18, wherein the receiving a first message from a network side device, and obtaining the first information based on the first message comprises: receiving first signaling from the network side device in a case that the first device is in a radio resource control connected state, wherein the first signaling comprises the first configuration information and/or the second configuration information. ### Claim 20 (depends on 12) A fourth device, comprising a processor and a memory, wherein the memory stores a program or instructions executable on the processor, and the program or instructions, when executed by the processor, implement the relay communication method according to claim 12.